Liquid crystal display panel

ABSTRACT

A liquid crystal display panel is provided. The liquid crystal display panel includes a first substrate disposed opposite to a second substrate. A color resist layer is disposed between the first substrate and the second substrate. A conductive electrode is disposed on the color resist layer. A via hole penetrating the conductive electrode and in contact with the color resist layer is formed on the conductive electrode. A support column is disposed at a position corresponding to the via hole, and a material for preparing the support column includes a molecular sieve.

FIELD

The present invention relates to the field of display technology, andmore particularly, to a liquid crystal display panel.

BACKGROUND

Liquid crystal displays (LCD) have characteristics of low cost, highresolution, high contrast, and fast response times, and are one ofimportant displays on the market. The liquid crystal displays mainlyconsist of an array substrate, a color filter substrate, and a liquidcrystal layer disposed between the array substrate and the color filtersubstrate. In order to facilitate alignment of the liquid crystal, apolyimide (PI) layer is coated on a surface of the array substrate andthe color filter substrate. The PI material is dripped and diffused tobe evenly coated on the array substrate and the color filter substrate.

However, during diffusion of the PI solution, the PI solution diffusesto via holes on the array substrate or the color filter substrate thatare in contact with the color resist layer. The PI solution flowing intothe via holes is incomplete due to high viscosity of the PI solution, sothat the PI layer formed in the via hole is thin or the PI layer cannotbe formed, and the internal ions of the color resist layer enter theliquid crystal layer, which causes the voltage of the liquid crystal atthe via hole to change. Thus, uneven display brightness at the via holehappens.

SUMMARY OF INVENTION Technical Issues

A liquid crystal display panel is provided to solve the technicalproblem that the PI solution flowing into the via holes is incompletedue to high viscosity of the PI solution, and the ions inside the colorresist layer enter the liquid crystal layer, which causes the voltage ofthe liquid crystal at the via hole to change, and uneven displaybrightness at the via hole is happened.

Solution of Problem Technical Solution

A liquid crystal display panel comprises:

-   -   a first substrate;    -   a second substrate disposed opposite to the first substrate;    -   a liquid crystal layer disposed between the first substrate and        the second substrate;    -   a color resist layer disposed between the first substrate and        the second substrate;    -   a conductive electrode disposed on the color resist layer; and    -   an alignment layer disposed on the conductive electrode. The        conductive electrode is provided with a via hole penetrating        through the conductive electrode and in contact with the color        resist layer, and a support column is disposed on a side of the        conductive electrode away from the color resist layer and        corresponding to the via hole, and a material of the support        column comprises a molecular sieve, and the molecular sieve        comprises hydrated aluminosilicate.

In one embodiment, the color resist layer is disposed between the firstsubstrate and the conductive electrode, or the color resist layer isdisposed between the second substrate and the conductive electrode.

In one embodiment, a pixel electrode and a first alignment layer aresequentially disposed on the first substrate, and a common electrode anda second alignment layer are sequentially disposed on the secondsubstrate.

In one embodiment, the color resist layer is disposed between the firstsubstrate and the pixel electrode, the conductive electrode comprises apixel electrode disposed on the color resist layer, the alignment layercomprises the first alignment layer disposed on the pixel electrode, andthe via hole penetrates through the pixel electrode.

In one embodiment, the via hole penetrates through the color resistlayer.

In one embodiment, the color resist layer is disposed between the secondsubstrate and the common electrode, the conductive electrode comprisesthe common electrode disposed on an array layer, the alignment layercomprises the second alignment layer disposed on the common electrode,and the via hole penetrates through the common electrode.

In one embodiment, the support column is disposed on the secondalignment layer.

In one embodiment, a plurality of the via holes are provided, and thesupport column comprises a plurality of columns corresponding to theplurality of via holes one by one.

In one embodiment, the support column comprises a primary support columnand a secondary support column, the primary support column contacts withthe first alignment layer and the second alignment layer, and thesecondary column is spaced from the second alignment layer.

In one embodiment, a mass fraction of the molecular sieve in the supportcolumn ranges from 5% to 20%.

A liquid crystal display panel comprises:

-   -   a first substrate;    -   a second substrate disposed opposite to the first substrate;    -   a liquid crystal layer disposed between the first substrate and        the second substrate;    -   a color resist layer disposed between the first substrate and        the second substrate;    -   a conductive electrode disposed on the color resist layer; and    -   an alignment layer disposed on the conductive electrode. The        conductive electrode is provided with a via hole penetrating        through the conductive electrode and in contact with the color        resist layer, and    -   a support column is disposed on a side of the conductive        electrode away from the color resist layer and corresponding to        the via hole, and a material of the support column comprises a        molecular sieve.

In one embodiment, the color resist layer is disposed between the firstsubstrate and the conductive electrode, or the color resist layer isdisposed between the second substrate and the conductive electrode.

In one embodiment, a pixel electrode and a first alignment layer aresequentially disposed on the first substrate, and a common electrode anda second alignment layer are sequentially disposed on the secondsubstrate.

In one embodiment, the color resist layer is disposed between the firstsubstrate and the pixel electrode, the conductive electrode comprises apixel electrode disposed on the color resist layer, the alignment layercomprises the first alignment layer disposed on the pixel electrode, andthe via hole penetrates through the pixel electrode.

In one embodiment, the via hole penetrates through the color resistlayer.

In one embodiment, the color resist layer is disposed between the secondsubstrate and the common electrode, the conductive electrode comprisesthe common electrode disposed on an array layer, the alignment layercomprises the second alignment layer disposed on the common electrode,and the via hole penetrates through the common electrode.

In one embodiment, the support column is disposed on the secondalignment layer.

In one embodiment, a plurality of the via holes are provided, and thesupport column comprises a plurality of columns corresponding to theplurality of via holes one by one.

In one embodiment, the support column comprises a primary support columnand a secondary support column, the primary support column contacts withthe first alignment layer and the second alignment layer, and thesecondary support column is spaced from the second alignment layer.

In one embodiment, a mass fraction of the molecular sieve in the supportcolumn ranges from 5% to 20%.

A molecular sieve is added to the material for preparing the supportcolumn, and the support column is formed at a position corresponding tothe via hole. When the alignment layer is formed on the conductiveelectrode, the PI solution flowing into the via hole is incomplete,which results that the internal ions of the color resist layer enter theliquid crystal layer. At this time, the function of adsorbing ions bythe molecular sieve may effectively adsorb the ions precipitated in thecolor resist layer inside the molecular sieve, thereby eliminating theinfluence of the ions on the liquid crystal in the liquid crystal layer.Therefore, the variation of the voltage of the liquid crystal at the viahole to cause uneven display brightness at the via hole is avoided, sothat twill weave is also improved.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a schematic structural view of a liquid crystal display panelaccording to first embodiment of the present invention.

FIG. 2 is a schematic structural view of the liquid crystal displaypanel according to second embodiment of the present invention.

FIG. 3 is a schematic structural view of the liquid crystal displaypanel according to third embodiment of the present invention.

REFERENCE NUMERALS

-   first substrate 11; active layer 12; first insulating layer 13; gate    14; second insulating layer 15; source/drain metal layer 16; organic    layer 17; pixel electrode 18; first alignment layer 19; second    substrate 21; common electrode 22; second alignment layer 23; black    matrix 24; support column 30; primary support column 31; secondary    support column 32; color resist layer 40; via hole 50; and liquid    crystal layer 60.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

In order to make the purpose, technical solution, and effect of thepresent invention clear and definite, the present invention is furtherdescribed in detail below with reference to the accompanying drawingsand examples. It should be understood that the specific embodimentsdescribed herein are only used to explain the present invention, and arenot used to limit the present invention.

During diffusion of a PI solution, the PI solution diffuses to via holeson the array substrate or the color filter substrate that are in contactwith a color resist layer. The PI solution flowing into the via holes isincomplete due to high viscosity of the PI solution, so that the PIlayer formed in the via hole is thin or the PI layer cannot be formed,and the internal ions of the color resist layer enter the liquid crystallayer, which causes the voltage of the liquid crystal at the via hole tochange. Thus, uneven display brightness at the via hole happens. Thepresent invention may solve the above-mentioned problem.

Referring to FIG. 1 , a liquid crystal display panel includes a firstsubstrate 11 and a second substrate 21 opposite to each other. A liquidcrystal layer 60 and a color resist layer 40 are disposed between thefirst substrate 11 and the second substrate 21. A conductive electrodeis disposed on the color resist layer 40, and an alignment layer isdisposed on the conductive electrode.

The conductive electrode is provided with a via hole 50 penetratingthrough the conductive electrode and in contact with the color resistlayer 40, and a support column 30 is disposed on a side of theconductive electrode away from the color resist layer 40 andcorresponding to the via hole 50, and a material of the support column30 comprises a molecular sieve,

It should be noted that the molecular sieve is a synthetic compound withthe function of screening molecules. Molecular sieves have many uniformpores and neatly arranged cavities. Molecular sieves with different poresizes may separate molecules based on different sizes and shapes.Molecular sieves have adsorption, ion exchange, and catalyticproperties.

It should be noted that material for preparing the alignment filmincludes, but is not limited to, polyimide (PI). A molecular sieve isadded to the material for preparing the support column 30, and thesupport column 30 is formed at a position corresponding to the via hole50. When the alignment layer is formed on the conductive electrode, thePI solution flowing into the via hole 50 is incomplete, which resultsthat the internal ions of the color resist layer 40 enter the liquidcrystal layer 60. At this time, the function of adsorbing ions by themolecular sieve may effectively adsorb the ions precipitated in thecolor resist layer 40 inside the molecular sieve, thereby eliminatingthe influence of the ions on the liquid crystal in the liquid crystallayer 60. Therefore, the variation of the voltage of the liquid crystalat the via hole 50 to cause uneven display brightness at the via hole 50is avoided, so that twill weave is also improved.

Specifically, the color resist layer 40 is disposed between the firstsubstrate 11 and the conductive electrode, and the color resist layermay also be disposed between the second substrate 21 and the conductiveelectrode.

Specifically, a pixel electrode 18 and a first alignment layer 19 aresequentially disposed on the first substrate 11, and a common electrode22 and a second alignment layer 23 are sequentially disposed on thesecond substrate 21. The support column 30 is disposed on the secondalignment layer 23.

A plurality of the via holes 50 are provided, and the support column 30comprises a plurality of columns corresponding to the plurality of viaholes 50 one by one.

It should be noted that each column comprises a molecular sieve, so thatit may absorb ions and avoid the ions precipitated from the via holes 50diffusing in the liquid crystal layer 60.

Furthermore, the support column 30 comprises a primary support column 31and a secondary support column 32, and the primary support column 31contacts with the first alignment layer 19 and the second alignmentlayer 23. Therefore, a sufficient space between the first alignmentlayer 19 and the second alignment layer 23 for accommodating the liquidcrystal layer 60 is maintained.

The secondary support column 32 is spaced from the second alignmentlayer 23.

It should be noted that there is an electric field between the pixelelectrode 18 and the common electrode 22, and ions generally diffuse tothe first substrate 11 or the second substrate 21 under the action ofthe electric field, so the columns corresponding to the via holes 50 mayabsorb ions well.

Referring to FIG. 1 , the color resist layer 40 is disposed between thefirst substrate 11 and the pixel electrode 18, the conductive electrodecomprises a pixel electrode 18 disposed on the color resist layer 40,the alignment layer comprises a first alignment layer 19 disposed on thepixel electrode 18, and the via hole 50 penetrates through the pixelelectrode 18.

Referring to FIG. 2 , when the color resist layer 40 is disposed on thesecond substrate 21, the color resist layer 40 is disposed between thesecond substrate 21 and the common electrode 22. The conductiveelectrode comprises a common electrode 22 disposed on an array layer,the alignment layer comprises the second alignment layer 23 disposed onthe common electrode 22, and the via hole 50 is formed on the commonelectrode 22 and penetrates through the common electrode 22.

Specifically, material for preparing the molecular sieve may be hydratedaluminosilicate. The hydrated aluminosilicate is formed by the reactionof silicon dioxide (SiO₂) and aluminium oxide (Al₂O₃). The molecularratio of SiO₂ and Al₂O₃ in the hydrated aluminosilicate may be adjustedto prepare molecular sieves with different pore sizes, so as to adsorbions precipitated in the color resist layer, while avoiding the liquidcrystal molecules absorbed by the molecular sieve.

It should be noted that, when the support column 30 is formed, amolecular sieve adsorbs ions and the molecular sieve and organicmaterials may be mixed and fixed on the second alignment layer 23 toform a support column 30. A mass fraction of the molecular sieve in thesupport column ranges from 5% to 20%. Also, a mass fraction of themolecular sieve in the support column is 10%.

Referring to FIG. 3 , in one embodiment, an array layer is furtherdisposed on the first substrate 11. The array layer includes an activelayer 12 disposed on the first substrate 11 and a first insulating layer13 covering the active layer 12, a gate 14 disposed on the firstinsulating layer 13, a second insulating layer 15 covering the gate 14,and a source/drain metal layer 16 disposed on the second insulatinglayer 15.

Specifically, when the color resist layer 40 is disposed between thefirst substrate 11 and the pixel electrode 18, the color resist layer 40is disposed on the array layer.

The via hole 50 penetrates through the color resist layer 40. Inaddition, the via hole 50 extends to the surface of the source/drainmetal layer 16, and the pixel electrode 18 contacts the source/drainmetal layer 16 through the via hole.

In one embodiment, an organic layer 17 is further disposed between thecolor resist layer 40 and the pixel electrode 18, and the via hole 50penetrates the organic layer 17. The organic layer 17 is used to changethe flatness of surface of the color resist layer 40, so as to preventelectric fields from interfering with each other. Therefore, it mayeffectively improve uneven display brightness of the liquid crystaldisplay device due to flatness factors, and it may also reduce parasiticcapacitance and display abnormalities such as flicker caused byexcessive electrical load. Accordingly, the quality of the displaydevice is improved.

In one embodiment, the color resist layer 40 includes a plurality ofcolor resist blocks arranged at intervals. A black matrix 24 is furtherdisposed on the common electrode 22, and the position of the blackmatrix 24 corresponds to a gap between two adjacent color resist blocks.The second alignment layer 23 covers the black matrix 24.

The present invention has beneficial effects described as follows. Amolecular sieve is added to the material for preparing the supportcolumn 30, and the support column 30 is formed at a positioncorresponding to the via hole 50. When the alignment layer is formed onthe conductive electrode, the PI solution flowing into the via hole 50is incomplete, which results that the internal ions of the color resistlayer 40 enter the liquid crystal layer 60. At this time, the functionof adsorbing ions by the molecular sieve may effectively adsorb the ionsprecipitated in the color resist layer 40 inside the molecular sieve,thereby eliminating the influence of the ions on the liquid crystal inthe liquid crystal layer 60. Therefore, the variation of the voltage ofthe liquid crystal at the via hole to cause uneven display brightness atthe via hole 50 is avoided, so that twill weave is also improved.

In the above embodiments, the description of each embodiment has its ownemphasis. For a part that is not described in detail in one embodiment,reference may be made to related descriptions in other embodiments.

In the above, the present application has been described in the abovepreferred embodiments, but the preferred embodiments are not intended tolimit the scope of the invention, and a person skilled in the art maymake various modifications without departing from the spirit and scopeof the application. The scope of the present application is determinedby claims.

What is claimed is:
 1. A liquid crystal display panel, comprising: afirst substrate; a second substrate disposed opposite to the firstsubstrate; a liquid crystal layer disposed between the first substrateand the second substrate; a color resist layer disposed between thefirst substrate and the second substrate; a conductive electrodedisposed on the color resist layer; and an alignment layer disposed onthe conductive electrode; wherein the conductive electrode is providedwith a via hole penetrating through the conductive electrode and incontact with the color resist layer, and a support column is disposed ona side of the conductive electrode away from the color resist layer andcorresponding to the via hole, and a material of the support columncomprises a molecular sieve, and the molecular sieve comprises hydratedaluminosilicate.
 2. The liquid crystal display panel according to claim1, wherein the color resist layer is disposed between the firstsubstrate and the conductive electrode, or the color resist layer isdisposed between the second substrate and the conductive electrode. 3.The liquid crystal display panel according to claim 2, wherein a pixelelectrode and a first alignment layer are sequentially disposed on thefirst substrate, and a common electrode and a second alignment layer aresequentially disposed on the second substrate.
 4. The liquid crystaldisplay panel according to claim 3, wherein the color resist layer isdisposed between the first substrate and the pixel electrode, theconductive electrode comprises a pixel electrode disposed on the colorresist layer, the alignment layer comprises the first alignment layerdisposed on the pixel electrode, and the via hole penetrates through thepixel electrode.
 5. The liquid crystal display panel according to claim4, wherein the via hole penetrates through the color resist layer. 6.The liquid crystal display panel according to claim 3, wherein the colorresist layer is disposed between the second substrate and the commonelectrode, the conductive electrode comprises the common electrodedisposed on an array layer, the alignment layer comprises the secondalignment layer disposed on the common electrode, and the via holepenetrates through the common electrode.
 7. The liquid crystal displaypanel according to claim 3, wherein the support column is disposed onthe second alignment layer.
 8. The liquid crystal display panelaccording to claim 7, wherein a plurality of the via holes are provided,and the support column comprises a plurality of columns corresponding tothe plurality of via holes one by one.
 9. The liquid crystal displaypanel according to claim 8, wherein the support column comprises aprimary support column and a secondary support column, the primarycolumn contacts with the first alignment layer and the second alignmentlayer, and the secondary support column is spaced from the secondalignment layer.
 10. The liquid crystal display panel according to claim1, wherein a mass fraction of the molecular sieve in the support columnranges from 5% to 20%.
 11. A liquid crystal display panel, comprising: afirst substrate; a second substrate disposed opposite to the firstsubstrate; a liquid crystal layer disposed between the first substrateand the second substrate; a color resist layer disposed between thefirst substrate and the second substrate; a conductive electrodedisposed on the color resist layer; and an alignment layer disposed onthe conductive electrode; wherein the conductive electrode is providedwith a via hole penetrating through the conductive electrode and incontact with the color resist layer, and a support column is disposed ona side of the conductive electrode away from the color resist layer andcorresponding to the via hole, and a material of the support columncomprises a molecular sieve.
 12. The liquid crystal display panelaccording to claim 11, wherein the color resist layer is disposedbetween the first substrate and the conductive electrode, or the colorresist layer is disposed between the second substrate and the conductiveelectrode.
 13. The liquid crystal display panel according to claim 12,wherein a pixel electrode and a first alignment layer are sequentiallydisposed on the first substrate, and a common electrode and a secondalignment layer are sequentially disposed on the second substrate. 14.The liquid crystal display panel according to claim 13, wherein thecolor resist layer is disposed between the first substrate and the pixelelectrode, the conductive electrode comprises a pixel electrode disposedon the color resist layer, the alignment layer comprises the firstalignment layer disposed on the pixel electrode, and the via holepenetrates through the pixel electrode.
 15. The liquid crystal displaypanel according to claim 14, wherein the via hole penetrates through thecolor resist layer.
 16. The liquid crystal display panel according toclaim 13, wherein the color resist layer is disposed between the secondsubstrate and the common electrode, the conductive electrode comprisesthe common electrode disposed on an array layer, the alignment layercomprises the second alignment layer disposed on the common electrode,and the via hole penetrates through the common electrode.
 17. The liquidcrystal display panel according to claim 13, wherein the support columnis disposed on the second alignment layer.
 18. The liquid crystaldisplay panel according to claim 17, wherein a plurality of the viaholes are provided, and the support column comprises a plurality ofcolumns corresponding to the plurality of via holes one by one.
 19. Theliquid crystal display panel according to claim 18, wherein the supportcolumn comprises a primary support column and a secondary supportcolumn, the primary support column contacts with the first alignmentlayer and the second alignment layer, and the secondary support columnis spaced from the second alignment layer.
 20. The liquid crystaldisplay panel according to claim 11, wherein a mass fraction of themolecular sieve in the support column ranges from 5% to 20%.